Electronic Whiteboard Having Flexibility Membrane Electromagnet Induction Generating Device

1. An electronic whiteboard having flexible membrane electromagnetic induction generating device, including an electronic whiteboard main unit having a writing layer as surface, a bottom support bracket layer as bottom, an input induction section, a recognition controlling circuit, a signal output device inside between the said two layers and a frame around, and also including an input pen, characterized in that: said induction section is composed of a covering layer, an electromagnetic induction generating layer and a bottom support bracket layer, wherein the base layer of the electromagnetic induction generating layer is an insulated flexible membrane which can be a film material, the surfaces of membrane are printed with an electromagnetic induction receiving antenna array which is induction antenna cells distributed along X axis and Y axis, thereby a flexible membrane electromagnetic induction generating layer is constituted, the output of that electromagnetic induction generating layer is connected to the recognition controlling circuit, and the input pen has a radio signal generating device; said signal output device is a cable connecting device which is a cable having USB joint interface or a wireless data communicating device which is a radio frequency transceiver, and said signal output device is connected to a computer and/or a printer and/or a data storing equipment directly; said induction antenna array cells are the cells printed on the two sides of the membrane surface respectively; more than one layer of induction antenna cells along X axis and Y axis are the cells printed on the two sides of the membrane surface and the layers are insulated from each other; and the intervals between the induction antenna cells of each layer are different for more than one layer of induction antenna cells.

2. An electronic whiteboard having flexible membrane electromagnetic induction generating device as cited in claim 1 , characterized in that: said recognition controlling circuit is set on a PCB (printed circuit board), and the antenna's output port of said flexible membrane electromagnetic induction generating layer is spliced or plugged or welded to the corresponding input pin on the PCB (printed circuit board).

3. An electronic whiteboard having flexible membrane electromagnetic induction generating device as cited in claim 1 , characterized in that: said induction antenna cell is silver paste material or mixture material of silver paste and carbon paste.

4. An electronic whiteboard having flexible membrane electromagnetic induction generating device as cited in claim 1 , characterized in that: a shielding layer can be provided behind said electromagnetic induction generating layer to increase the anti-interference capability.

5. An electronic whiteboard having flexible membrane electromagnetic induction generating device as cited in claim 1 , characterized in that: the radio signal generating device of said writing input pen is an electromagnetic wave generating device.

6. An electronic whiteboard having flexible membrane electromagnetic induction generating device as cited in claim 1 , characterized in that: said radio signal generation device of the writing input pen has a RF generating or receiving device, corresponding RF receiving or generating device is provided on the whiteboard main unit.